Resistance Exercise and Physical Performance in Adults Aged 60 to 83

OBJECTIVES: This investigation examined the effect of 6 months of high‐ or low‐intensity resistance exercise on muscular strength and endurance and stair climbing ability in adults aged 60 to 83. DESIGN: A randomized controlled trial. SETTING: University of Florida Center for Exercise Science PARTIC...

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Bibliographic Details
Published in:	Journal of the American Geriatrics Society (JAGS) Vol. 50; no. 6; pp. 1100 - 1107
Main Authors:	Vincent, Kevin R., Braith, Randy W., Feldman, Ross A., Magyari, Pete M., Cutler, Rachel B., Persin, Stephanie A., Lennon, Shannon L., Md, Abdel H. Gabr, Lowenthal, David T.
Format:	Journal Article
Language:	English
Published:	Boston, MA, USA Blackwell Science Inc 01-06-2002 Blackwell Wiley Subscription Services, Inc
Subjects:	Aged Aged, 80 and over Biological and medical sciences Body Composition Clinical trials Diet Elderly people endurance Exercise Exercise - physiology Female function Fundamental and applied biological sciences. Psychology Geriatrics Humans Male Middle Aged Muscle, Skeletal - physiology Muscular system older Older people Physical Endurance - physiology Physical fitness Psychomotor Performance - physiology resistance exercise Resistance training strength Time Factors Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports Weight Lifting - physiology Human Physical exercise Sport Physical training Physical performance Lean body mass Adult Elderly Strength
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Summary:	OBJECTIVES: This investigation examined the effect of 6 months of high‐ or low‐intensity resistance exercise on muscular strength and endurance and stair climbing ability in adults aged 60 to 83. DESIGN: A randomized controlled trial. SETTING: University of Florida Center for Exercise Science PARTICIPANTS: Sixty‐two men and women completed the study protocol. Subjects were matched for strength and randomly assigned to a control (n = 16), low‐intensity (LEX, n = 24), or high‐intensity (HEX, n = 22) group. INTERVENTION: Six months of progressive, whole‐body resistance training. Subjects trained at 50% of their one‐repetition maximum (1RM) for 13 repetitions (LEX) or 80% of 1RM for eight repetitions (HEX) three times per week for 24 weeks using resistance machines. One set each of 12 exercises was performed. MEASUREMENTS: One‐repetition maximum was measured for eight different exercises. Muscular endurance was measured using leg press and chest press machines. Low back strength was measured using a lumbar extension machine. Stair climbing ability was assessed as the time to ascend one flight of stairs. RESULTS: 1RM significantly increased for all exercises tested for the HEX and LEX groups (P≤ .050). The increases in total strength (sum of all eight 1RMs) were 17.2% and 17.8% for the LEX and HEX groups, respectively. Muscular endurance improved by 79.2% and 105.0% for the leg press, and 75.5% and 68.0% for the chest press for the LEX and HEX groups, respectively. The time to ascend one flight of stairs significantly decreased for both the LEX and HEX groups (P≤ .050). Lumbar extension strength increased by 62.6% and 39.5% for the LEX and HEX groups, respectively. CONCLUSIONS: These data indicate that significant and similar improvements in strength, endurance, and stair climbing time can be obtained in older adults as a consequence of high‐ or low‐intensity resistance exercise training. These findings may have an effect on how resistance exercise is prescribed to older adults.
Bibliography:	ArticleID:jgs50267 istex:214BD47801EEFBCBFBF43C2B928506CDF7D1866D ark:/67375/WNG-QJ9DCGV0-V ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1 ObjectType-News-3
ISSN:	0002-8614 1532-5415
DOI:	10.1046/j.1532-5415.2002.50267.x